2.4.17 fix for loop driver to support 256 devices

["Heinz J . Mauelshagen" <mauelshagen@sistina.com>]

While faking large volume groups a minor flaw in the loop driver showed up,
which fails creating the maximum of 256 devices.

The followong patch against 2.4.17 fixes that here.


diff -u linux-2.4.17.orig/drivers/block/loop.c linux-2.4.17/drivers/block/loop.c
--- linux-2.4.17.orig/drivers/block/loop.c      Fri Dec 21 18:41:53 2001
+++ linux-2.4.17/drivers/block/loop.c   Mon Feb 18 12:23:32 2002
@@ -36,6 +36,9 @@
  * Al Viro too.
  * Jens Axboe <axboe@suse.de>, Nov 2000
  *
+ * Support up to 256 loop devices
+ * Heinz Mauelshagen <mge@sistina.com>, Feb 2002
+ *
  * Still To Fix:
  * - Advisory locking is ignored here.
  * - Should use an own CAP_* category instead of CAP_SYS_ADMIN
@@ -965,7 +968,7 @@
  * And now the modules code and kernel interface.
  */
 MODULE_PARM(max_loop, "i");
-MODULE_PARM_DESC(max_loop, "Maximum number of loop devices (1-255)");
+MODULE_PARM_DESC(max_loop, "Maximum number of loop devices (1-256)");
 MODULE_LICENSE("GPL");

 int loop_register_transfer(struct loop_func_table *funcs)
@@ -1001,9 +1004,9 @@
 {
        int     i;

-       if ((max_loop < 1) || (max_loop > 255)) {
+       if ((max_loop < 1) || (max_loop > 256)) {
                printk(KERN_WARNING "loop: invalid max_loop (must be between"
-                                   " 1 and 255), using default (8)\n");
+                                   " 1 and 256), using default (8)\n");
                max_loop = 8;
        }

-- 

Regards,
Heinz    -- The LVM Guy --

*** Software bugs are stupid.
    Nevertheless it needs not so stupid people to solve them ***

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Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
                                                  56242 Marienrachdorf
                                                  Germany
Mauelshagen@Sistina.com                           +49 2626 141200
                                                       FAX 924446
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